氧化还原反应与四种基本类型反应的关系如下图所示，则下列化学反

氧化还原反应与四种基本类型反应的关系如下图所示，则下列化学反应属于区域3的是

A．2H₂+O₂ 2H₂O

B．2NaHCO₃ Na₂CO₃+H₂O +CO₂↑

C．Zn +H₂SO₄＝ ZnSO₄+ H₂↑

D．CuO＋CO Cu + CO₂

答案

相关题目

They were walking along the path when a blue flower______． A．came into sigh

They were walking along the path when a blue flower______． A．came into sight B．be in sight C．lose sight of D．was out of sight

位于抚州市乐安县西的古建筑群——流坑古村，被誉为“千

位于抚州市乐安县西的古建筑群——流坑古村，被誉为“千古第一村”而蜚声中外。某中学学生前往参观考察，看到一古宅门前横匾上写着“理学名家

Never in my wildest dreams ________these people are living in such poor condi

Never in my wildest dreams ________these people are living in such poor conditions． A．I could imagine B．could I imagine C．I couldn’t imagine D．couldn’t I imagine

My grandfather ______ us stories when I was young. A. was used to

My grandfather ______ us stories when I was young. A. was used to tell B. is used to telling C. used to tell

某酯A的化学式为C9H10O2，且A分子中只含有1个苯环，苯环上只

某酯A的化学式为C9H10O2，且A分子中只含有1个苯环，苯环上只有一个取代基。现测出A的1H-NMR谱图有5个峰，其面积之比为1︰2︰2︰2︰3。利用红外光谱仪可

17．阅读下面一则材料，发表你的看法。（7分）据媒体报道

17．阅读下面一则材料，发表你的看法。（7分）据媒体报道，河北某中学推出实行“教师全程随班办公”制度，打破传统的师生学习和办公的空间藩篱

已知椭圆C1：+=1（a＞b＞0）的离心率为e=，且过点（1，）．抛

已知椭圆C1：+=1（a＞b＞0）的离心率为e=，且过点（1，）．抛物线C2：x2=﹣2py（p＞0）的焦点坐标为（0，﹣）．（Ⅰ）求椭圆C1和抛物线C2的方程；（Ⅱ

Thousands of Haitians cheered as the Chinese medical team arrived,many of____eve

Thousands of Haitians cheered as the Chinese medical team arrived,many of____even cried with joy. A.those B.them C.whom

氧化还原反应与四种基本类型反应的关系如下图所示，则下列化学反

答案

相关题目

最新题目